diff --git a/backend/scripts/init-hot-wallet.sh b/backend/scripts/init-hot-wallet.sh
index 25344c52..fe4cdc9f 100644
--- a/backend/scripts/init-hot-wallet.sh
+++ b/backend/scripts/init-hot-wallet.sh
@@ -386,52 +386,37 @@ derive_address() {
 
   ADDRESS=""
 
-  # 方法 1: 使用 node + ethers
-  if command -v node &> /dev/null; then
-    log_debug "尝试使用 Node.js + ethers 计算地址"
+  # 检查 node 是否可用
+  if ! command -v node &> /dev/null; then
+    log_error "Node.js 未安装，无法计算地址"
+    echo "公钥 (hex): $PUBLIC_KEY"
+    return
+  fi
 
+  # 获取脚本所在目录，进入 blockchain-service 目录执行（那里有 ethers）
+  local script_dir="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
+  local service_dir="$script_dir/../services/blockchain-service"
+
+  if [ -d "$service_dir/node_modules/ethers" ]; then
+    log_debug "使用 blockchain-service 目录的 ethers"
+    ADDRESS=$(cd "$service_dir" && node -e "
+      const { computeAddress } = require('ethers');
+      console.log(computeAddress('0x$PUBLIC_KEY'));
+    " 2>/dev/null)
+  else
+    # 尝试直接执行
+    log_debug "尝试直接使用 node + ethers"
     ADDRESS=$(node -e "
-      try {
-        const { computeAddress } = require('ethers');
-        const address = computeAddress('0x$PUBLIC_KEY');
-        console.log(address);
-      } catch (e) {
-        // ethers 可能未安装
-        process.exit(1);
-      }
-    " 2>/dev/null) || ADDRESS=""
+      const { computeAddress } = require('ethers');
+      console.log(computeAddress('0x$PUBLIC_KEY'));
+    " 2>/dev/null)
   fi
 
-  # 方法 2: 使用 Python + web3 (备选)
-  if [ -z "$ADDRESS" ] && command -v python3 &> /dev/null; then
-    log_debug "尝试使用 Python + eth_keys 计算地址"
-
-    ADDRESS=$(python3 -c "
-try:
-    from eth_keys import keys
-    from eth_utils import to_checksum_address
-    public_key_bytes = bytes.fromhex('$PUBLIC_KEY')
-    if len(public_key_bytes) == 65 and public_key_bytes[0] == 4:
-        public_key_bytes = public_key_bytes[1:]
-    pk = keys.PublicKey(public_key_bytes)
-    print(pk.to_checksum_address())
-except Exception as e:
-    pass
-" 2>/dev/null) || ADDRESS=""
-  fi
-
-  # 方法 3: 使用 openssl + keccak256 (更复杂，暂不实现)
-
   if [ -n "$ADDRESS" ]; then
     log_success "EVM 地址派生成功"
     echo "  地址: $ADDRESS"
   else
-    log_warn "无法自动计算地址"
-    echo ""
-    echo "请手动从公钥计算 EVM 地址，或安装以下工具之一:"
-    echo "  - Node.js + ethers: npm install -g ethers"
-    echo "  - Python + eth_keys: pip install eth-keys eth-utils"
-    echo ""
+    log_error "计算地址失败"
     echo "公钥 (hex): $PUBLIC_KEY"
   fi
 }